import buildURL from '../helpers/buildURL';
import buildFullPath from '../core/buildFullPath';
import settle from '../core/settle';

/**
 * 返回可选值存在的配置
 * @param {Array} keys - 可选值数组
 * @param {Object} config2 - 配置
 * @return {{}} - 存在的配置项
 */
const mergeKeys = (keys, config2) => {
    let config = {};
    keys.forEach((prop) => {
        if (typeof config2[prop] !== 'undefined') {
            config[prop] = config2[prop];
        }
    });
    return config;
};
export default (config) => {
    return new Promise((resolve, reject) => {
        const _config = {
            url: buildURL(buildFullPath(config.baseURL, config.url), config.params),
            header: config.header,
            complete: (response) => {
                response.config = config;
                try {
                    // 对可能字符串不是json 的情况容错
                    if (typeof response.data === 'string') {
                        response.data = JSON.parse(response.data);
                    }
                    // eslint-disable-next-line no-empty
                } catch (e) {}
                settle(resolve, reject, response);
            },
        };
        let requestTask;
        if (config.method === 'UPLOAD') {
            delete _config.header['content-type'];
            delete _config.header['Content-Type'];
            let otherConfig = {
                // #ifdef MP-ALIPAY
                fileType: config.fileType,
                // #endif
                filePath: config.filePath,
                name: config.name,
            };
            const optionalKeys = [
                // #ifdef APP-PLUS || H5
                'files',
                // #endif
                // #ifdef H5
                'file',
                // #endif
                'formData',
            ];
            requestTask = uni.uploadFile({ ..._config, ...otherConfig, ...mergeKeys(optionalKeys, config) });
        } else if (config.method === 'DOWNLOAD') {
            requestTask = uni.downloadFile(_config);
        } else {
            const optionalKeys = [
                'data',
                'method',
                // #ifdef MP-ALIPAY || MP-WEIXIN
                'timeout',
                // #endif
                'dataType',
                // #ifndef MP-ALIPAY || APP-PLUS
                'responseType',
                // #endif
                // #ifdef APP-PLUS
                'sslVerify',
                // #endif
                // #ifdef H5
                'withCredentials',
                // #endif
                // #ifdef APP-PLUS
                'firstIpv4',
                // #endif
            ];
            requestTask = uni.request({ ..._config, ...mergeKeys(optionalKeys, config) });
        }
        if (config.getTask) {
            config.getTask(requestTask, config);
        }
    });
};
